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Grace Design m201
Dual Channel Microphone Preamplifier

OUR PART #:  M201-GRACE

The Grace Design m201 delivers unmatched audio performance, with massive headroom, ultra-wide bandwidth and a very open, musical character.
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Grace Design EON Limited 20 Year Warranty
Grace Design m201 with A/D Module
Grace Design m201 with A/D Module Installed

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Our Price: $2,560.00
List Price: $2,695.00
You save 5%!

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Grace Design m201
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The Grace Design m201 delivers unmatched audio performance, with massive headroom, ultra-wide bandwidth and a very open, musical character. The signal path has been hot-rodded to be fully balanced from start to finish, resulting in a wider dynamic range, while new high-current output drivers enable even longer cable runs without signal loss. This means the m201 can translate a sonic picture of astonishing clarity and detail, which serves to capture the essential character of the music being recorded.

The m201 has an optional 24-bit/192kHz A/D converter module, from the factory or as a retrofit to existing units. With the A/D converter module installed, the microphone preamplifier section or the M+S matrix can be routed to the A/D converter input directly for standard recording applications. Or, with the additional analog line inputs on the A/D converter module, the mic preamplifier and A/D converter sections can be used separately, which allows for external processing to be inserted between the mic amp and the A/D converter.

  NOTE: The rear panel image and one of the front panel images pictured above show the m201 with the optional A/D module installed. Please see the "Accessories" tab to order that option.

External synchronization to word clock or Digidesign LoopSync is available, and features a proprietary dual stage PPL with s-Lock for extremely low jitter and rock solid digital stability without the use of sample rate conversion.
An exclusive ribbon mic mode is standard, which shifts the gain range up 10dB while deactivating 48V phantom power, bypassing the decoupling capacitors and optimizing the input impedance. Each channel has an ‘input mode’ rotary switch which selects between a standard 48V phantom input, ribbon mic mode, a front panel DI input or optional DPA high voltage inputs (130V or 190V).

Included is the M+S (mid side) decoder circuitry with a built-in width control. The front panel width control is wired with a precision 12 position rotary switch whience amplifiers feed a set of dedicated outputs, allowing simultaneous recording of discrete mid+side signals as well as the stereo matrix.

The front panel-mounted HI-Z inputs are designed to accommodate a wide variety of high impedance input sources, making the m201 an excellent choice as a DI box which will flawlessly preserve the sound of any plugged-in instrument.

Grace Design m201 Features:

  • fully balanced, transformerless design
  • dual parallel XLR outputs for each channel
  • ribbon mic mode
  • front panel DI / instrument inputs
  • DPA microphones 130V (190V) phantom power option
  • built-in M+S decoder with dedicated outputs and front panel width control
  • precision 24 position gold contact rotary switch gain controls
  • higher current outputs drive even longer cable runs
  • no electrolytic capacitors in the signal path
  • sealed gold contact relays for all signal switching
  • large two-color, bi-phase LED peak indicator
  • regulated linear power supply with custom wound toroidal transformer
  • highest quality components used throughout
  • Comes with Grace Design's transferrable EON Limited 20 Year Warranty

Grace Design m201 Specifications (without A/D converter):

Frequency Response
@ 40dB gain 0.2dB (50 ohm   source)  18Hz-65kHz
@ 40dB gain 3dB (50 ohm  source)  4.5Hz-350kHz

THD+N
@ 20dB gain +25dBu out, 1kHz  <.0008%
@ 40dB gain +25dBu out, 1kHz  <.0009%
@ 60dB gain +25dBu out, 1kHz  <.0070%

Intermodulation Distortion
@ 40dB gain +25dBu out  
SMPTE/DIN 1:1 (50Hz, 7kHz)  <.0020%
SMPTE/DIN 4:1 (50Hz, 7kHz)  <.0030%

Noise - Referred to Input
@ 60dB gain 50 ohm  source  -130dB
@ 60dB gain 150 ohm  source -127dB
@ 60dB gain 600 ohm  source  -123dB

Phase Deviation
100Hz-20kHz @40dB gain  <3

Crosstalk
Any Channel @ 40dB gain 1kHz  -125dB
Any Channel @ 40dB gain 10kHz  -115dB

CMRR
@ 60dB gain, 3.5Vcm, 1kHz  >70dB
@ 60dB gain, 3.5Vcm, 10kHz  >70dB

Maximum Output Level
1kHz, 100Kohm    load  +28dBu

Impedance
Input  8100 ohms
Input, ribbon mode  20k ohms
Output  190 ohms

Peak Led Meter
Green threshold  -14dBu
Red threshold  +16dBu

Weight and Dimensions
2U, 19 rack mount x 10 deep 16.5lbs (7.5kg)

Power Consumption
A/D module specifications (line input)

Dynamic range
20Hz-20kHz  >115dB
A weighting  >117dB
THD+N
1kHz, -1dBFS, 20Hz-22kHz  < 0.00026% (-112dB)

Frequency response  +/-0.2dB  -3dB
44.1kHz Fs  5Hz-21kHz   22kHz
48kHz Fs  5Hz-23kHz   24kHz
88.2kHz Fs  5Hz-41kHz   44kHz
96kHz Fs  5Hz-45kHz   48kHz
176.4kHz Fs  5Hz-54kHz   72.5kHz
192kHz Fs  5Hz-59kHz   79kHz

Full scale input level  +16dB or +24dB (+/-2dB trim)

CMRR
60Hz  >65dB
1kHz  >80dB
10kHz  >60dB
IMD SMPTE 4:1 60Hz, 7kHz, -3dBFS  <100dB (0.0008%)

Interchannel crosstalk  <-120dB
Group Delay
44.1-48kHz 13/Fs

Sample rates, internal crystal (kHz)  44.1, 48, 88.2, 96, 176.4, 192

External Clock Lock Range
Wide lock mode  40.1kHz-207kHz (+/-8% at each sample rate)
s-Lock mode  +/-250ppm (+350, -400ppm typical)

Intrinsic Jitter, 200Hz-20kHz BW
Wide lock mode  < 60ps RMS
s-Lock mode  < 40ps RMS

Jitter Rejection Corner Frequency
Wide lock mode, -3dB, 12dB/octave  800Hz
s-Lock mode, -3dB, 12dB/octave  10Hz

A/D sensitivity
Range A  +22dBu = 0dBFS (18dB headroom*)
Range B  +18dBu = 0dBFS (14dB headroom*)
*can be calibrated for any setting between +18dBu = 0dBFS and +24dBu = 0dBFS

A/D Option Module  for M201 preamp (not included)
Grace Design M201A/D A/D Option Module for M201 preamp (not included)
Note: Please call for information on the installation of this module first before purchasing!The m201 can be equipped with an optional ultra low-latency 24bit/192kHz A/D converter module. The A/D module is available on new m201 ...
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